Corner-plate for concrete piers, &amp;c.



J. G. SUNDERLAND.

CORNER PLATE FOR CONCRETE PIERS, 6w.

APPLICATION FILED 13313.15. 1908:

Patented Mar. 23, 1909.

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any desired height on said pier.

JAMES C. SUNDERLAND, OF KANSAS CITY, MISSOURI CORNER-PLATE FORSpecification of Letters-Patent.

OQNGRETE PIERS 80c.

Patented March 23, 1909.

Application filed February 15, 1908. Serial No. 416,004.

To all whom it may concern:

Be it known that I, JAMES C. SUNDERLAND, a citizen. of the UnitedStates, residing at Kansas City, in the county of Jackson and State ofMissouri, have invented certain newv and useful In'lprovements inCorner-Plates for Concrete Piers, &c., of which the following is aspecification.

My invention relates to improvements in corner-plates for protecting thecorner of columns, piers, and pilasters composer of concrete or otherplastic material; and one of my objects is to provide a corner-platewhich may be reliably held in'place without the aid of anchors, bolts,or other extraneous fastening devices.

In order that the invention may be fully understood, reference will nowbe made to the accompanying drawing, in which:

Figure 1 represents a broken perspective view of a pier, the corners ofwhich are protected by my corner-plates, which extend to Fig. 2 is anenlar ed cross section of the same on line ll lll. of Fig. 1. Fig. 3 isan enlarged broken perspective of one of the cornerplates. Fig. 4- is aplan view of a modified form of corner-plate.

In carrying out the invention, I prefer to employ sheet-metal stripsbent into the de-. sired form, although plates cast in the proper formmay be used. Each plate consists of a corner portion 1, from. which apair of wings 2 extend at an angleto each other ap roximating ninetydegrees, and a pair of f anges 3 extending inwardly from the wings at anobtuse angle to the latter.

In the modified form shownin Fig. 4, the' plate consists ofa roundedcorner portion 1 a pair of wings 2 communicating with said roundedportion, and a pair of flanges 3 communicating with the wings.

In practice the corner-plates are placed in position in the corners of amold A shown in dotted lines, Fig. 2, in which the pier B is formed.Then when the plastic material for forming said ier is poured into themold,

a portion of it w' l flow through the openings 4, and thus securely holdthe corner-plates in position after the plastic'material has set. I amaware that heavy angle-irons have been employed for protecting thecorners of concrete piers, but they are not satisfactory for the reasonthat they are inconvenient to handle, and have to be anchored into theplastic material by bolts, or other extraneto the cost of construction.Furthermore, the heads of these fastening devices usually engage theouter surface of the angle-irons and give the work an unfinishedappearance. An offset is also left between the upper. ends of the'angle-irons and the corners of the ally chamfered to their upper ends toprevent said corners from chipping Oh.

My devices requireno extraneous fastening devices, as they are reliablyheld in place by the material which flows into openings 4, and they givea finished appearance to the pier as all of their exposed portions areflush therewith.

Having thus described my invention, what I claim is: v

1. In combination with a pier or the like composed of a body of plasticmaterial, corner plates for protecting the corners thereof, each plateconsisting of a corner part, a air of wings each lying in the samestralght plane throughout extended from the ends of said corner part andlying flushwith the ad; j acent sides of said pier,- said win s being ofcomparatively considerable widt I'SO, as to extend along adjacent sidesof the pier and being disposed at right angles to each other, and aflange extended inwardly from the end of each of said wings, saidflanges being disposed at an obtuse angle to sald wings and being ofconsiderable width so as to extend for a distance into the body of thepier or the like, said flanges each'being formed with a series ofopenings whereby the-material on opposite sides of the flanges extendsthrough said openings and serves to lock the flanges against outwardmovement.

.2. A ier com osed of a materia and a p urality of corner elements, eachof said elements embodying a corner art, wings extended therefrom andemhedded in the body so as to lie flush with-its considerable width wich' form anchoring meansfor said element and strengthemn means for thebody of plastic mater al, saI

ous fastening devices, which add materially piers, the corners of whichlatter are generbody of plastic outer faces, and flan es comparativelyof flanges being related to the center of said In testimony whereof Iafl-ix my signature, pier body so afs i210 iadliatke therefrom, (till;in the presence of two witnesses. center or core 0 t e 0( yein surroun eb said flanges the two flanges o f each corner JAMES SUN D ERLAND 5 eement converging toward one another, WVitnesses: I

and the adjacent flanges of adjacent corner F. G. FISCHER, elementsconverging toward one another. M. Cox.

